Parametric investigation of self-similar decay laws in MHD turbulent flows

摘要

The decay laws of energy and of higher moments of the Elsasser fields z~(±)=v±b in the self-similar regime of magnetohydrodynamic (MHD) turbulence were investigated using phenomenological models as well as two-dimensional numerical simulations with periodic boundary conditions and up to 2048~2 grind points. The results were compared with the generalization of the parameter-free model of Galtier et al.